At Dubai Tennis Stadium
Dubai, United Arab Emirates
Surface: Hardcourt outdoor
DUBAI, UNITED ARAB EMIRATES (AP) _ Results Friday from Dubai Duty Free Tennis Championships at Dubai Tennis Stadium (seedings in parentheses):
Andrey Rublev (2), Russia, def. Alexander Zverev (7), Germany, 6-3, 7-6 (9).
Daniil Medvedev (3), Russia, def. Novak Djokovic (1), Serbia, 6-4, 6-4.
Harri Heliovaara, Finland, and Lloyd Glasspool (3), Britain, def. Nikola Mektic and Mate Pavic (1), Croatia, 6-4, 6-2.
Fabrice Martin, France, and Maxime Cressy, United States, def. Sander Gille and Joran Vliegen, Belgium, 5-7, 7-6 (5), 10-7.